JPH04222659A - Compusition composed of plurality of components - Google Patents

Abstract

PURPOSE: To provide with a device suitable for applying a multicomponent composition such as a two-component adhesive, which is not preferable to be mixed together before application to a work-piece surface. CONSTITUTION: Each component of the composition comprising a plurality of components is supplied through each isolated passage until it reaches a surface of the work-piece. A first component is supplied through a passage T, CV1 , RV2 , 736 and 726; and a second component is supplied through a passage R, P, RV3 , RV4 and 382. And both components are dispersed on the work-piece when they have reached an applicator head 380, and are mixed together by the rotating applicator head 380 having a brush.

Description

[Detailed description of the invention]

0001

FIELD OF THE INVENTION This invention relates to multicomponent compositions, ie, compositions comprising two or more components which, when mixed, constitute an adhesive composition. It should be noted that although the following description discloses only a device for supplying two components, it is easy to make the device capable of supplying three or more components if necessary. , the present invention can be said to relate to a device for handling two or more components.

0002

BACKGROUND OF THE INVENTION Two-component adhesive compositions are well known. Usually, it consists of a first component called a "curing agent" and a second component called an "adhesive." Two-component adhesive compositions of this type include, for example, polyurethane compositions, neoprene compositions, rubber solutions, and the like.

When using such two-component compositions, it is necessary to separate the two components until they are actually used. This is because once the two components are mixed, the composition tends to harden relatively quickly. Therefore, the time from mixing the two components to the time of actual use is relatively short. Moreover, if the amount of such composition used at a time is relatively small, it may be appropriate to premix even relatively small batches for continuous use processes. Not.

[0004] Also, when using some of these compositions, it may be necessary to pay particular attention to the treatment of the curing agent. This is because it may pose a danger not only to the person performing the treatment but also to those in the vicinity. For example, feeding hardener into compression mechanisms should be avoided unless adequate safeguards are in place to prevent leakage (e.g., mechanisms that spray the hardener). , such accident prevention measures are of course expensive. Moreover, if the curing agent is susceptible to changes in its properties by moisture, it becomes necessary to use dry air in pressure systems that use pressurized air that comes into contact with the curing agent. come. This is also costly. Furthermore, it is well known that the curing agent tends to explode if the curing agent itself is pressurized by introducing pressurized air.

[0005] When handling components such as those making up polyurethane or neoprene compositions, other hazards also require attention. This is especially the case when dealing with toxic hardeners. Therefore, as a device for supplying such components, a device that is closed and has leak-proof performance is desired. In this regard, for example, piston and cylinder mechanisms are conceivable. This mechanism uses seals (ie, piston rings) to prevent leakage. From the point of view of meter measurement, such a mechanism may be attractive, but
This is also insufficient.

[0006]

SUMMARY OF THE INVENTION Accordingly, one of the objects of the present invention is to provide a feeding device for feeding a two-component composition onto the surface of a workpiece. This feeding device solves the problem that sufficient, but not excessive, adhesive composition can be used for a given application process.

[0007]

SUMMARY OF THE INVENTION The present invention provides a delivery device for delivering a multi-component composition to the surface of a workpiece. This feeding device has a rotating feeding head, in which each component is fed separately to the rotating feeding head and, in turn, to the surface of the workpiece. Mixing of the components takes place on the surface of the workpiece by rotation of the rotary feed head while the rotary feed head is pressed against the surface of the workpiece.

As described above, in the supply device according to the present invention, each component is mixed after the components have been supplied to the surface of the workpiece. It is possible to solve the problems that occurred in batch processing.

[0009] In order to mix each component as described above and simultaneously spread the mixed adhesive composition on the surface of the workpiece, it is necessary to use a substantially annular shape that is pressed against the surface of the workpiece. It is convenient to use a dispensing head having an operative surface of . In practice, the working surface preferably surrounds the point at which the composition is applied to the workpiece surface. Additionally, in a preferred embodiment, the dispensing head includes a rotating brush assembly. This rotating brush assembly not only has the effect of thoroughly mixing each component, but also rubs the composition onto the surface of the workpiece (
(scrubbing) also has an effect.

Preferably, the feed head includes a ball member contained within the housing. The housing has an outlet through which the components can flow out of the delivery head, the flow of the components being controlled by a ball member. Furthermore, in such a case each component is separately fed to the feeding head in the region of the part of the surface of the ball member remote from the outlet. In this manner, each component flows substantially unmixed with the other component past the ball member to the outlet. More specifically, if the dispensing head has a rotating brush assembly, the brush assembly is attached to the housing and the bristles extend beyond the end face of the housing where the outlet is provided. Preferably, it is protruding. In this configuration, when the feed head is pressed against the workpiece surface,
The bristles of the brush assembly are deformed and spread across the workpiece surface. Moreover, in a preferred embodiment of the dispensing device of the present invention, the ball member projects from an outlet located within the housing, and biasing the ball member into a seal prevents components from exiting the outlet. Spring means are provided to prevent this, and the ball member is movable against the spring pressure, thereby breaking the seal and allowing the components to escape through the outlet. Also provided is a stop means for maintaining the ball member in a position protruding from the outlet when the ball member breaks out of its sealed condition;
The ball member is thus pressed against the workpiece surface and is capable of determining the amount of deformation and spreading of the bristles of the brush assembly.

[0011] Preferably, the tubular member is connected to a source of each component in order to supply each component to the supply head. Each tubular member extends to a delivery head for delivering components to the tubular member. Additionally, in some embodiments for two-component compositions, one of the tubular members is housed within the other tubular member. In this way, mixing of the components does not occur until they reach the feed point in the region of the surface part of the ball member remote from the outlet.

When the feeding device according to the invention is used for a two-component adhesive composition consisting of a hardener and an adhesive, it is preferable that the hardener (in more detail (3% to 5% of the total volume of the composition) to one tubular member contained within the other tubular member. Moreover, it is desirable that the feeding mechanism for the present feeding device be pressurized. In particular, it is desirable that the adhesive source (and not the hardener source) be pressurized. Otherwise, there is a risk that the adhesive will rise in the supply element for the hardener when the supply device is not in use. In order to eliminate such a fear, it is preferable to engage the check valve with the supply member. Furthermore, it is preferable that the curing agent supply member is mounted in such a way that it can be easily removed from inside the other supply member, so that when the supply device is not used for a long period of time, for example overnight, the curing agent supply member can be easily removed. By removing the parts, the risk of accidental mixing of the components can be avoided.

[0013] In order to supply appropriate amounts of each component to the supply head, it is preferable to provide adhesive supply means with metering means. The metering means has a container for each component whose volume can be varied and also has control means for controlling this volume. This control means controls the volume reduction rate of each container when each component is discharged from each container, and in turn controls the flow rate when each component is discharged from each container. This control is performed so that the ratio of flow rates when each component is discharged from each container is kept constant.

By maintaining a constant ratio between each flow rate, a correctly metered amount of each component is delivered to the delivery head in a controlled ratio, thereby ensuring that the appropriate amounts of the two components are combined as described above. is supplied to the workpiece surface. Furthermore, each container of the metering means is preferably a collapsible container that is closed except for the inlet/outlet. By using such a collapsible container, there is no need for reliable sliding or rotating seals, and the risk of leakage from one of the two components is avoided.

Preferably, the control means also enable a quantity of each component to be delivered to each container prior to the discharge of each component. The amounts of each component thus delivered are in the same ratio between the respective flow rates from each container. In this way, the metering means always maintains a state of equilibrium, in which the usable amounts of each component always maintain a proper ratio.

In a preferred embodiment, the control means for the metering means comprises a single motor operated via a linkage, the linkage having a pivotable lever. Each container is connected to this lever so that it can be folded. More specifically, the pivot lever is mounted for pivoting about a pivot point, and the ratio between the flow rates from each container is determined by the connection distance of each container from the pivot point; It is determined by the actual volume of each container (or, in the case of a cylindrical container, its cross-sectional area). For different two-component compositions, it is of course preferable to vary the ratio between the respective flow rates. And for this purpose, the position of the pivot pin around which the pivot lever can pivot is preferably adjustable along the length of the pivot lever.

[0017] The collapsible container used in the metering means can be in the form of, for example, a telescoping bag member with plastic memory, but it is preferred that the collapsible container is constructed of bellows. (The bellows is formed by deforming the tube under pressure using a mold, or by electrodeposition on such a mold. In other words, the end closure member is welded to the tubular portion thus formed.) The bellows is one piece, except that when the ends are welded, a closed chamber is formed.)

[0018] As mentioned above, for example, it may not be desirable to use a pressure mechanism to deliver the curing agent of a two-component adhesive composition. In view of this point, it is preferable that the adhesive supply means of the apparatus according to the invention comprises gravity supply means and pressure supply means. The gravity supply means supplies the first component to the first variable volume container and the pressure supply means supplies the second component to the second variable volume container. By using such an adhesive supply means, the risk of injury to the operator due to spraying of hardener in the event of a leak within the means is significantly reduced;
Furthermore, the risk of explosion due to the pressure supply of curing agent using compressed air is eliminated by the use of gravity feed means for the initial supply of curing agent to the variable volume container. Using gravity feeding means greatly benefits from the fact that the viscosity of the curing agent is relatively low. That is, compared to adhesives which have a high viscosity and thus require a pressure supply means to be supplied to the second variable volume container, the curing agent can flow well by gravity. This is an advantage. Therefore, when two components are discharged from each container, there is no longer a problem of compressed air acting directly on each component, each component is mechanically discharged from the container,
Reach the point of mixing. Furthermore, by using a variable volume container, the relative amounts between the two components can be predetermined, and the amounts of the two components can be adjusted to ensure sufficient curing of the adhesive composition without using an excess of curing agent. The ratio between can be easily determined. The optimum amount of curing agent used generally ranges from 3 to 5% of the total volume of the composition.

[0019] In a preferred embodiment of said adhesive supply means, a first supply line extends from the tank (forming part of the gravity supply means) to the supply point;
The container is connected to said first supply line via a first branch line, a second supply line extending from a pressure source (forming part of the pressure supply means) to said supply point. , the second container is connected to the second feed line via a second branch line. Obviously, in the case of gravity feeding means, while the first component is being discharged from the first container, the pressure in the first feed line is less than the pressure acting on the component in the first feed line. It's also small. Furthermore, the pressure in the second feed line is maintained at the pressure generated by the pressure source, but is preferably increased by actuating the biasing means. The biasing means reduces the volume of the second cylinder and causes the components contained within the second cylinder to be discharged into the second feed line. Restriction valve means are provided "upstream" of the branch line to direct the flow of components in the direction of the delivery head. Moreover, also in the preferred embodiment described above, restriction valve means are provided upstream of the first branch line in the first feed line to direct the flow of the components towards the feed head.

[0020] The ball in the feed head of the device according to the invention acts as a shutoff valve and prevents the flow of components from the pressure supply means. In this way, the pressure supply means is placed under pressure for all the times it is necessary to use the adhesive supply means. Moreover, pressurizing the second component in this way can maintain the first component under the same pressure and further prevent the first component from continuously flowing due to gravity. . If desired, further restriction valve means may be provided in the first feed line to prevent continuous flow due to gravity. In order to avoid the risk of the second component being forced into the first feed line by the pressure exerted on the first component by the second component, a further restriction valve means is provided in the first feed line of the first branch line. It can also be provided "downstream", adjacent to the feed head. This can prevent the components from flowing in the direction away from the supply head.

Hereinafter, an apparatus for supplying adhesive to the hem of a shoe sole, which is equipped with an adhesive supply apparatus according to the present invention, will be described in detail with reference to the drawings. It will be appreciated that the present device and its various variations are chosen merely as an example of the invention for illustrative purposes and are not intended to limit the scope of the invention.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present device is similar to the device disclosed in European Patent Application No. 0 353 881, that is, the device for supplying adhesive in stages along the edge of the sole, except for the following points. It's the same. The present specification is based on the specification of said European patent application, and also on the other European patent applications to which said European patent application refers. For this reason, where there are identical parts that are incorporated in these two devices but are not shown in the drawings herein, the same reference numerals as in the specification of the aforementioned European patent application will be used. However, in order to indicate that the parts are not shown in the drawings of this application, the reference numerals will be shown in parentheses.

The device shown in the drawings comprises a base (10) which supports a pivot shaft (14) via a bracket (12). This pivot axis (14)
A support (16) for the shoe support (18) is pivotable about the shoe support (18). Shoe support (18)
is formed to support the sole of the shoe (S) at the uppermost position, and in this uppermost position, the toe of the shoe (S) faces toward the front of the device, that is, toward the operator. At the rear of the device, the base (10) supports a support column structure (22) that supports the casting (24). A support casting 34 having two vertical lugs 32 is supported on this casting (24) so as to be pivotable about a vertical axis. Between the two vertical lugs 32 a tool support means 26' is supported pivotably about a horizontal axis 31.

The device further includes a first stepper motor (144) mounted on the base (10), which first stepper motor (144) is attached to the shoe support (10).
18) around a horizontal axis given by the pivot axis (14) (X-axis movement). Similarly, a second stepper motor (84) supported by the casting (24) is provided which pivots the support casting 34 about its vertical axis (Y-axis movement). let In addition to this, the third step motor (122) (European Patent Application No. 004
3645) is the supporting casting 3
4 behind its vertical pivot point, this third stepper motor (122) moves the support casting 34 and thus the tool support means 26' which it supports about the horizontal axis 31. Make a pivot movement (Z-axis movement). Here, the X-axis, Y-axis and Z-axis represent three coordinate axes, and the tool support means 26'
The tool supported by can move along these coordinate axes. Details of the shoe support (18) are given in German patent application GB-A 2077090,
Details of devices allowing movement along three coordinate axes can be found in European patent applications EP-A0091321 and EP-A0091321;
No. 043645.

Tool support means 26' includes a housing 650 which is pivotally mounted about horizontal axis 31. A hollow tubular arm 652 extends from the front surface of the housing 650, and a support rod 654 is rotatably mounted within the tubular arm 652. A plate 656 is attached to the front end of the support rod 654 and supports two arms 658 extending forward. The two arms 658 are spaced apart in the width direction of the device, and each arm has a pair of links 660.
, 662 are pivotally mounted. The upper ends of the links 660, 662 pivotally support a plate 664. Links 660, 662, together with plate 664 and arm 658, constitute a first parallel linkage mechanism of tool support means 26'.

A plate 666 is attached to the front end of the plate 664.
is fixedly attached, and plate 666 extends forwardly from the front end of plate 664. A block 668, which forms part of a tool holder 670, is pivotally attached to the forked front end of the plate 666. A link 672 is attached to the tool holder 670 on its left side and is pivotally connected to each of the left side links 660, 662. Links 660, 662, tool holder 670, link 672, and plates 664, 666 form a second parallel linkage mechanism of tool support means 26'. The pivot points are arranged in relation to each other such that the tool holder 670 can pivot about an axis. Here, "an axis" refers to a virtual center that extends in the lateral direction of the sole of the shoe supported by the shoe support (18) and passes through a point P located on the axis of the support rod 654. It is an axis that As discussed below, the tool is actually placed in the tool holder 670.
When supported by , its axis of rotation also passes through point P. This point P indicates that the sole of the shoe supported by the shoe support (18) is connected to the lowering member (450) and the toe support means (47).
0) represents the height of the device when it is arranged. Furthermore, in the central position of the tool support means 26', point P is located vertically above the axis (14) of the shoe support (18).

To enable such pivoting or tilting movement of tool holder 670 about a lateral axis, a pair of links 662 support a block 674 therebetween. A front end of a push rod 676 is pivotally connected to the block 674, and a rear end of the push rod 676 is similarly pivotally connected to a block 678. This block 678 is attached to a pulley 680 that is rotatable around a drive shaft 682. The pulley 680 is connected to the drive shaft 6 by a timing belt 684.
It is arranged to be rotatable around 82. The timing belt 684 is stretched between a second pulley 688 and a tension pulley 690 provided to maintain the tension of the timing belt 684. A third pulley 692 is attached to the shaft 688, and a second timing belt 694 is spanned between the third pulley 692 and a fourth drive pulley 696 attached to the drive shaft 682. Drive shaft 682 is driven by step motor 698. Support rod 654
A similar drive mechanism is provided for rotational movement. This drive mechanism includes pulleys 702, 704, 706
(the fourth pulley is not shown) and the timing belt (
(not shown)
The pulley 706 is fixedly attached to the support rod 654.

Tool holder 670 is configured to support tool 250' as an adhesive supply device according to the present invention. This device is the device described in European patent application EP-A 0 276 944, except as stated below.
That is, it is substantially the same as the tool that is fixedly attached to block 668. That is, the adhesive supply device 250' according to the present invention includes a hollow shaft 366 (see FIG. 2) attached to a block 668, and the hollow shaft 366 supports a sprocket 368 at its lower end. Sprocket 368 is connected via a chain (not shown, but designated by reference numeral 386 in the application) to an electric motor supported on tool holder 670. Hollow shaft 366 supports a collar 370 at its upper end. An upright pin 372 is attached inside this collar 370. The upright pin 372 is housed within a bore 374 in a collar 376 that is threadedly coupled to an output end 378 of a rotary joint 380. The adhesive supply pipe 382 has its upper end connected to the collar 376.
is pushed inside and engaged. Adhesive supply pipe 38
2 passes through the inside of the hollow shaft 366 and is screwed to a nozzle housing 384 (see FIGS. 3 and 4) at its lower end. Thus, as sprocket 368 rotates, adhesive supply tube 3
82 and thus the nozzle housing 384 attached to the adhesive supply tube 382 rotate together.

A nozzle housing 384 forming a part of the head of the supply device has a lower end surface 384a in the shape of a truncated cone. This lower end surface 384a is connected to the adhesive supply pipe 382
An annular rim is formed apart from the lower end surface 382a of the rim, and a chamber is formed within the annular rim. A ball 392 is housed inside this chamber, with a portion of the ball 392 projecting beyond the annular rim. Adhesive supply pipe 38
A spring 394 is housed in a countersink in the lower end of 2, which biases ball 392 against the annular rim to maintain a seal. The seal prevents adhesive from flowing through the nozzle. On the other hand, when pressure is applied to the protruding portion of the ball 392, the ball 392 retracts against the lower end 382a of the countersink. This countersink hole is provided so that the adhesive flows out from the adhesive supply pipe 382 when the ball 392 is urged against the adhesive supply pipe 382, and the adhesive that flows out goes over the surface of the ball 392. flow, annular rim and ball 3
It passes between the protruding portion of 92 and exits to the outside.

As can be seen from the above, when the device 250' is used, the ball 3 is applied to the workpiece to which adhesive is applied.
When 92 is pressed, ball 392 retracts and adhesive is dispensed through the nozzle until ball 392 moves out of contact with the workpiece. As soon as the ball 392 is no longer in contact with the workpiece, a seal is established and adhesive supply is subsequently stopped. FIG. 4 shows ball 392 in a retracted position.

A brush assembly 398 is attached to the outside of the nozzle housing 384 by a jubilee clip 400. The brush assembly 398 includes a ring 402 of plastic material that slides along the nozzle housing 384 and has a set of bristles 404 embedded within the ring 402. This set of bristles 404 has a cylindrical shape surrounding the nozzle housing 384 and protruding beyond the end surface 384a. Furthermore, the bristles 404 are arranged around the entire periphery of the end surface 384a. As previously discussed, brush assembly 398 is fixed to nozzle housing 384 and thus rotates therewith.

The nozzle housing 384 is connected to the block 668.
can "float" against That is, excessive pressure applied to ball 392 causes nozzle housing 384
The entire surface of the shoe is softened by a sliding movement relative to the hollow shaft 366, so that the unevenness of the sole surface to which the adhesive is to be applied is controlled by the height path determined by the third NC motor (122). can be adapted to. To ensure that nozzle housing 384 is biased to its lower position, nozzle housing 384 and hollow shaft 36
A spring 396 is further provided which acts between the lower side of 6 and the lower side of 6. The force exerted by spring 396 is significantly greater than the force exerted by spring 394, thus causing ball 392 to retract when engaged with ball 392. As shown in FIG. 1, when housing 384 is in its lowermost position, housing 384 is located below point P. In the “teach” mode of operation (more on this later), Z
Preferably, the working surface portion of the tool is set at point P when setting the axis position. That is, a significant amount of the "float" amount occurs during the "teach", which allows a change from that position to a positive or negative value to occur, depending on the irregularities in the shape of the sole. . When the device is in the "teach" mode, the operator needs to pay attention to the distance between the two collars 370, 376 in order to determine the amount of float. Furthermore, if necessary,
A scale may be provided on one of the two collars to assist the operator.

The adhesive supply pipe 382 forming part of the adhesive supply means of the device according to the invention is connected to the block 376.
Bores 710, 712, 714, 71 formed within
6 (see FIG. 2), a joint 718, a rotary joint 380,
and further end cup 72 via end cup 720 .
0 through a fitting 722 that connects the flexible pipe 72 to
It is connected to 4. This flexible pipe 724 is connected to an adhesive supply source. This will be discussed later. Additionally, a second tube 726 passes through adhesive supply tube 382 and bores 710, 712, 714, and through the sidewall of bore 716.
The lower end of this second pipe 726 is connected to a ball 392.
, and the upper end of second tube 726 extends through a fitting 728 that is mounted inside end cup 720 . Fitting 728 has a conical end;
An auxiliary formed conical sleeve 732 is received within the conical end in an engaged and sealing manner. Is the conical sleeve 732 swaged?
or otherwise attached to second tube 726 and threaded nut 73 attached to fitting 728
4 is sandwiched in that position. The second tube 726 is connected via a supply tube 736 (see FIG. 7) to a source of hardener for the adhesive supplied by the pipe 724.

The adhesive supply means of the supply device according to the invention also includes metering means 740 (see FIGS. 5 and 6). This metering means 740 measures the two components that form the adhesive composition when mixed (these components are connected to the supply tube 382,
726 to the supply device 380). Metering means 740 includes a frame 742 supporting first and second manifold blocks 744, 746. A first manifold block 744 is configured to supply a curing agent (which constitutes the first component of the adhesive composition) to the inlet port 7.
48 and an internal passageway 75 extending inside the block 744.
0 and an opening at outlet port 752 to which pipe 724 connects. Check valve (restriction valve) mechanisms RV1 and RV2 are provided corresponding to the inlet port 748 and the outlet port 752, respectively.
Flow of curing agent in the direction from outlet port 752 to inlet port 748 can be prevented. A branch line 754 opening into the internal passageway 750 between the two check valve mechanisms RV1, RV2 is connected to a variable volume vessel represented as a bellows unit 756 mounted on the underside of the first manifold block 744. is familiar with Bellows unit 756 is an integral retractable component and is generally closed except for the inlet/outlet. Bellows unit 756 is connected to branch line 754 via this inlet/outlet. The lower end cap 758 of the bellows unit 756 is connected to the connecting linkage 76
It is connected to lever 762 via 0. lever 762
is pivotally attached to a block 764 that is attached to frame 742, as will be described in more detail below.

The second manifold block 746 also includes an inlet port 766 for adhesive supply, an internal passageway 768 extending through the interior of the block 746, and an opening at an outlet port 770 to which the pipe 382 connects. There is. Check valve (restriction valve) mechanisms RV3 and RV4 are provided corresponding to the inlet port 766 and the outlet port 770, respectively, and these check valve mechanisms RV3 and R
V4 prevents adhesive flow in the direction from outlet port 770 to inlet port 766. Branch line 77
2 opens into an internal passageway 768 between the two check valve mechanisms RV3, RV4, which in turn leads to a variable volume receptacle, represented as a bellows unit 774. Since the total amount of curing agent in the adhesive composition is in units of 3 to 5% of the total volume of the composition, the bellows unit 77
4 is formed larger than the bellows unit 756. Bellows unit 774 has an end cap 776 that is connected to lever 762 via an articulated linkage 778 at the lower end of cap 776 remote from the pivot point.

One end of piston rod 780 of piston and cylinder assembly PC1 connects to lever 762 at the same point as articulating linkage 778. Thus, when the piston and cylinder assembly PC1 is energized, the lever 762 pivots about its pivot point, and the bellows unit 75 also moves through the linkages 760, 778.
The volume of each of 6 and 774 increases and decreases. Moreover, by the mechanism described so far, two bellows units 756
, 774 is kept constant while the volume of each container is being reduced by the mechanism of lever 762 (similarly, the ratio of the flow rates of each component discharged from each container is The proportion is also controlled).

To adjust the flow rate ratio of the two components, block 764 is provided with a plurality of holes (four in this embodiment). A pivot pin 782 can be inserted into either of these holes. In addition, the lever 762 is also provided with the same number of holes, such that the holes in the lever 762 coincide with the holes in the block 764 when the lever 762 is in the horizontal position, i.e., in the stop position. ing. Depending on which of the four holes the pivot pin 782 is inserted into, the locus of the pivot movement of the lever 762 in response to the biasing of the piston and cylinder assembly PC1 changes, and thereby, two containers 756
, 774 can be adjusted.

FIG. 7 is a flow diagram of the adhesive supply means described above. As can be seen from this flow diagram, the curing agent is stored in tank T and is fed under the action of gravity to the inlet port of first manifold block 744 via on/off control valve CV1. For this purpose, the regulating valve RV1 is not provided with a spring, but it allows the curing agent to flow freely under the action of gravity. In contrast, regulating valve RV2 is spring-loaded to prevent curing agent from continuously flowing within the control supply means, except when pressure from bellows unit 756 causes it to flow through regulating valve RV2. It is prevented. The first manifold block 744 includes a branch line 786 to which a vent valve mechanism EV1 is connected. This vent valve mechanism EV1 can be manually actuated, allowing air to flow through bore 75.
0 and the branch line 754 to the outside through a return line 788 connected to the tank T. Since gravity feeding means is employed, the fluid inside the return pipe 788 tends to reach the same level as the fluid inside the tank T when the valve mechanism EV1 is open. Therefore, the branch line 754, the bellows unit 756
and air is purged from that portion of the gravity feed means including the first manifold block 744. As the volume of the bellows unit 756 increases, without applying pressure,
The curing agent is drawn into the interior of the bellows unit 756. As the volume of bellows unit 756 is reduced by the action of piston and cylinder assembly PC1, the curing agent is discharged from bellows unit 756 and transferred to supply head 380.
, and the regulating valve RV2 succumbs to that pressure. The supply pipe 736 is further provided with a check valve (restriction valve) RV5. This check valve RV5
allows curing agent to pass only in the direction of the ball 392 of the supply head 380. However, the check valve RV5
prevents backflow of adhesive and curing agent when the gravity feed means is pressurized and ball 392 is in the sealing position.

The adhesive supply means is itself pressurized. The adhesive supply means includes a pressurized pot means consisting of a reservoir R and a pump P, which supplies pressurized fluid to the inlet port of the second manifold block 746. Although the adhesive is maintained under pressure by the present adhesive supply means, in fact the entire adhesive supply means is pressurized. However, the pressure exerted on the adhesive is less than the pressure exerted by the volume reduction of the bellows units 756, 774. The operation of the bellows unit 774 is the same as that of the bellows unit 756, and as described above, the bellows unit 774 supplies a metered amount of adhesive to the ball 392.

At the end of the working period, it is desirable that no mixture of adhesive and curing agent remain within the adhesive supply means. Otherwise, the remaining adhesive and hardener will harden overnight, creating an internal blockage problem during the next operation. To avoid such problems, and at the same time avoid the risk of residue remaining inside the feed head 380 between each operation, line 724 is equipped with an on-off flow control valve EV2.
is provided. Switching control valve EV2 to the "off" condition at the end of the working period causes the end piece (not shown) to attach to the dispensing head 380 and dislodge the ball 392 from its sealed position. In this state, the control valve EV2 is opened again, and the pressure from the pressure pot means is applied to the line 72.
4 to act on the adhesive and drain any curing agent remaining in the vicinity of the ball 392. In addition, valve RV5
There is no problem with the curing agent remaining in the second pipe 726 downstream of. The problem is that curing agent remains inside the dispensing head 380 beyond the end of the second tube 726. After a relatively small amount of adhesive has been discharged in this manner, the control valve EV2 is closed again and the attachment to the supply head 380 is released. Ball 392 thus returns to its sealed position. Keep control valve EV2 closed.
Loosen the nut 734 and remove the second tube 726 from inside the main body of the feeding device. The second tube 726 may be immersed, for example, in a container of solvent, until next use. Joint 72
8 with a suitable plug (not shown)
Prepare.

In the operation of the apparatus described above, the adhesive and hardener are kept separate and separate until they reach the vicinity of the ball, so that they are kept separate and at the desired level on the surface of the workpiece. It will be supplied in proportion. The rotating brush assembly 398 not only scrubs the adhesive composition onto the workpiece surface, but also ensures proper mixing of the two components. Additionally, in operation of the device, the adhesive composition is dispensed in stages around the edge of the sole, and the adhesive is dispensed at a rate proportional to the speed of movement of the tool along the sole. , the operation of the piston and cylinder assembly PC1 is controlled accordingly. Moreover,
A control signal is used to allow adhesive to be applied as soon as the ball 392 is removed from its sealing position by engaging the sole. When this control signal is issued, the apparatus signals the tool support means to advance the means toward the workpiece, supplying pressurized fluid to the piston and cylinder assembly PC1, and the two bellows units 756, The start of volume reduction at 774 pressurizes the supply means.

Actually, two bellows units 756
, 774, it has been found that it is preferable to use the piston and cylinder assembly PC1, which has a relatively short stroke. Moreover, the following advantages can also be obtained by the short stroke piston and cylinder assembly PC1. That is, when a larger amount of adhesive is required, it is possible to extend the stroke without relying on the strokes of two or more units used when there is only one workpiece.

[Brief explanation of the drawing]

FIG. 1 is a side view of the tool support means of the present invention for applying adhesive to the hem of a shoe sole. The tool support means is shown as supporting an adhesive dispensing device according to the invention which is used to supply adhesive to the hem of a shoe sole.

2 is a partial sectional view showing details of the device shown in FIG. 1; FIG.

FIG. 3 is a cross-sectional view showing the ball of the device shown in FIG. 2 in a sealed state;

4 is a cross-sectional view showing the ball of the device shown in FIG. 2 engaging the sole of the shoe and breaking out of the sealed state; FIG.

FIG. 5 is a side view of the metering means forming part of the feeding device according to the invention;

FIG. 6 is a bottom view of the metering means forming part of the feeding device according to the invention;

FIG. 7 is a schematic diagram of adhesive supply means forming part of a supply device according to the invention;

[Explanation of symbols]

31 Horizontal axis 34 Support casting 372 Upright pin 380 supply head 382 Adhesive supply pipe 384 Nozzle housing 392 Ball 394 Spring 396 Spring 398 Brush assembly 400 clip 404 Hair 650 Housing 658 Arm 660 Link 664 plate 668 block 670 Tool holder 680 Pulley 688 Second pulley 690 Tension pulley 698 step motor 700 step motor 710 Boa 718 joint 724 line 726 2nd pipe 732 Conical sleeve 736 Supply line 740 Measuring means 742 Supply line 754 Branch line 744 First manifold block 746 Second manifold block 756 Bellows unit 772 Branch line 774 Bellows unit 786 Branch line 788 Return line

Claims (10)

[Claims] 1. A supply device for supplying a composition comprising a plurality of components to the surface of a workpiece, the supply device comprising a rotating supply head (3
80), each component is supplied to the supply head (380) in a separated state, and in that state is supplied to the surface of the workpiece, and the mixing of each component is performed by pressing against the surface of the workpiece. While the supply head (38
0) on the surface of the workpiece by rotation. 2. A ball member (392) housed within a housing (384) having an outlet, the component flowing from the delivery head through the outlet, the flow of component flowing through the ball member (392). The feeding device according to claim 1, wherein the two components are separated into the feeding head (380) in a region of the surface of the ball member (392) remote from the outlet. A feeding device, characterized in that the components flow over the ball surface to the outlet without mixing with each other. 3. Tubular supply means (382, 726) each connected to one source of each component, each of said means extending to said supply head (380) for supplying each component. The feeding device according to claim 1 or 2, characterized in that the feeding device is: Claim 4: Two supply means (382, 726) are provided, one of which (726) feeds the other (382).
The other side (38
Claim 3, characterized in that:
Feeding device as described. Claim 5: A variable capacity container for each component (7
56, 774) and control the volume reduction rate of each container (756, 774) when each component is discharged from said container (756, 774), and thus control the volume reduction rate of each container (756, 774).
) Control means (PC1) for controlling the ratio of the flow rates of the respective components discharged from ) to be kept constant; and adhesive supply means having a metering means (740). The supply device according to any one of claims 1 to 4. 6. The control means (PC1) of the measuring means (740) controls a large amount of each component into each container (756, 774) before discharging each component from each container (756, 774).
74), and the ratio of the amounts of each component thus supplied is equal to the ratio between the flow rates of each component discharged from each container (756, 774). The feeding device according to claim 5. 7. The feeding device according to claim 5, wherein each of the containers (756, 774) comprises a bellows unit which is a retractable container. 8. The adhesive supply means includes gravity supply means (786, 788, T) for supplying the first component into the first variable capacity container (756) and supplying the second component into the second container (756). Pressure supply means (746) for supplying the variable capacity container (774)
, P, R).
or 7. The supply device according to any one of 7. 9. The adhesive supply means comprises a first supply line (736, 7) extending from a tank (T) forming part of the gravity supply means to the supply head (380).
88), the first container (756) is connected to the first supply line (736, 7 through a first branch line (754)
88) and extending from a pressure source (P) forming part of said pressure supply means to said supply head (380), said second supply line (742) being connected to said second container (774 ) is connected to the second supply line (742) via a second branch line (772). 10. The first supply line (736, 78
a first restriction valve (RV1) provided upstream of the first branch line (754) in the second supply line (742);
2), and a second restriction valve (RV3) provided upstream of the vessel (756, 7).
When the components contained in 74) are discharged,
Feeding device according to claim 9, characterized in that the component flows in the direction of the feeding head (380).